Kylie Jenner is rumored to be jealous of sexy model Nicole Williams who is supposed to star in Tyga's new music video. The "Keeping Up with the Kardashians" star reportedly told him to replace her with herself.

In a report by The Hollywood Life, the 18-year-old Kylie Jenner was initially not interested to appear in her boyfriend Tyga's new video for his single "Doped Up." However, when the blond beauty heard that the "WAGS" star will appear on the video instead, she immediately told the rapper to replace her.

"Nicole Williams was cast in Tyga's latest music video, "Doped Up," as the lead last Saturday. It was shot downtown at a secret location. Kylie didn't want to be in the video, but when she found out that it was Nicole starring in the video, she asked him to replace Nicole with herself," an insider said.

The source added that Kylie Jenner might have been holding a grudge over the hot supermodel, who has been doing large campaigns and is dating Larry English. Nicole Williams is also reportedly being compared to the Kardashians.

"Nicole was 100% cut from the video," the source added.

Kylie Jenner first appeared in Tyga's "Stimulated" video where they were seen being intimate. It even showcased a lot of kissing courtesy of the couple.

This was not the first time that Kylie Jenner has expressed her jealousy over her 25-year-old boyfriend's work as a rapper.

In a report by Perez Hilton, Kylie Jenner was rumored to have ordered Tyga to cancel his Brazil trip where he will be doing a show.

A promoter of the show said in a statement, "A rep told us he would not be coming to Brazil for his shows because he was stopped by his current girlfriend, media personality and socialite Kylie Jenner."

"We are very upset in finding out an artist lacks the professionalism and the love for Brazilian fans, and allows something personal to interfere with his work schedule," the statement added.